With Baasansuren Enkhbaatar (Mongolia), Bat-Erdene Batchuluun (Mongolia), Dashkhuu Dorjkhand (Mongolia), Francis Sollano (Philip- pines), Ikhbayar Urchuud (Mongolia), Kang Soyoung (Korea), Lynette Wallworth (Austra- lia), Olof van Winden (The Netherlands), Orly Aviv (Israel), Robert Seidel (Germany), Timo Kahlen (Germany) and Václav Jirásek (Czech Republic) Trace is an important medium of past, present and the future. Ecological footprints, and cave paintings, other traces of human behavior help us to understand the evolu- tions that brought us here. Humans left these traces consciously through different forums of creations including infrastructure, invention, work of art, and literature etc. With advance- ment of technology we are creating digital footprints as well. Whether we visiting a web- site and searching online, our IP address and search history are saved by third party that provide the services. Without realizing we are creating passive digital footprint. We also as a human produce passive ecological foot- print that is determined largely by the choic- es we make in our daily lives. Our everyday activities-driving, washing, printing comes with price that goes beyond monetary value that cost us. Are we aware of our passive foot- prints? If third party records our digital traces, then what the future hold for human digi- tal traces in the future? Will algorithms or AI dominate our digital traces? Is there room for emotions, reasoning, other fundamental val- ues we as a human carry to record and pass our traces? The ACM is raising this important questions through the 2nd edition of UBIMAF under the theme of “Trace”. ​